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Prince William smiles at a young girl before competing in a charity polo match on July 14, as we awaits the birth of his first child with wife Kate Middleton. Reuters

Prince William found the perfect stress reliever Sunday as he patiently waits for the birth of the royal baby.

While his wife joined her parents at their Bucklebury, Berkshire, home, William was busy attending a charity polo match in Cirencester Park, Gloucestershire.

Read More: Kate Middleton Leaves Kensington Palace For Parents Home

His brother Prince Harry also participated in the July 14 match, which was held around 100 miles west of London, reports the Associated Press. The match raised funds for several U.K. charity organizations including Centrepoint, a charity devoted to offering support to homeless young people.

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William and Harry take a quick break during their charity polo match Cirencester Park, Gloucestershire, in central England Reuters

William was said to be in wonderful spirits throughout the match.

"He is glowing about this wonderful time in his life – and I think we should be glowing with him," Danielle Alexandra, a trustee of Centrepoint, told PEOPLE Magazine. "My sense is he's excited and very happy at the chance to be a father. He's one of the most loving people. ... He's a perfect guy to be a dad."

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Princes William and Harry play in the Jerudong Trophy polo match at Cirencester Park Polo Club near Cirencester in central England. Reuters

Though William and Harry lost the match, they still took time to meet former homeless people assisted by the organization.

And according to PEOPLE, a vehicle was prepped to immediately return him to London had his wife gone into labor.

Photographers and camera crews continue to camp outside of St. Mary's Hospital in London. The baby's exact due date isn't known, but officials did say that it would be around mid-July.

Most U.K. reports speculated that the due date was July 13. But with that date now gone, bets are being set that the baby will be born by July 17 (Wednesday).

Watch footage of Prince William and Prince Harry at the charity polo match below: